/*中间part*/
#content {
    width: 1000px;
    height: 850px;
    margin: 50px auto 0 auto;
    position: relative;
}

#nav2{
    width: 1000px;
    height: 100px;
    position: relative;
    margin: 0 auto;
}

#nav2 ul{
    list-style:none;
    float: left;
    position: relative;
    top: 25px;
}

#nav2 ul li{
    float: left;
    margin-left:40px;
}

#nav2 ul li a{
    color: dodgerblue;
    text-decoration:none;
}

#nav2 ul li a:hover{
    color: darkblue;
    text-decoration: underline;
}

#logo{
    width: 85px;
    height: 85px;
    float: left;
}

#logo2{
    width: 170px;
    height: 65px;
    float: left;
    position: relative;
    top: 5px;
}

.button{
    border:2px solid #C5C5C5;
    background:#EEEEEE;
    margin:0 4px;
    border-radius: 10px;
}

.search{
    border:2px solid #C5c5c5;
    height: 25px;
    border-radius: 10px;
}

#photo{
    width: 1000px;
    height: 130px;
    /*border: 1px solid black;*/
    margin: 0 auto;
    position: relative;
}

.photo1{
    width:230px;
    height: 130px;
    left: 140px;
    position: relative;
}

/*#photo img:nth-child(1){
    margin-left: 18px;
}*/

#photo img:nth-child(2){
    margin-left: 25px;
}

#photo img:nth-child(3){
    margin-right: 25px;
}

#left{
    position: absolute;
    width: 70px;
    height: 70px;
    top: 30px;
}

#right{
    position: absolute;
    left: 910px;
    width: 70px;
    height: 70px;
    top: 30px;
}

#tubiao{
    width: 1000px;
    height: 100px;
    position: relative;
    margin: 0 auto;
    margin-top: 40px;
}

.tubiao1{
    width: 90px;
    height: 100px;
    position: absolute;
    left: 80px;
}

.tubiao2{
    width: 110px;
    height: 100px;
    position: absolute;
    left: 250px;
}

.tubiao3{
    width: 110px;
    height: 100px;
    position: absolute;
    left: 440px;
}

.tubiao4{
    width: 110px;
    height: 100px;
    position: absolute;
    left: 630px;
}

.tubiao5{
    width: 110px;
    height: 100px;
    position: absolute;
    left: 820px;
}

#nav3{
    position: relative;
    margin: 0 auto;
    top: 40px;
}

#nav3 ul{
    list-style:none;
    float: left;
    font-size: 24px;
}

#nav3 ul li{
    float: left;
    margin-left:45px;
}

#nav3 ul li a{
    color:dimgrey;
    text-decoration:none;
}

#nav3 ul li a:hover{
    color: orange;
    text-decoration: none;
}

#pic{
    position: relative;
    margin: 0 auto;
    margin-top: 150px;
}

.pic1{
    width: 230px;
    height:300px;
    position: absolute;
    left:60px;
}

.pic2{
    width: 230px;
    height:300px;
    position: absolute;
    left:390px;
}

.pic3{
    width: 230px;
    height:300px;
    position: absolute;
    left:720px;
}